CUET · PHYSICS · PYQ PAPER 2025
Kinetic energies of four particles a, b, c, d of equal masses are given below. Arrange them in order of their decreasing de-Broglie wavelengths.
(A) \((KE)_a = 1 \text{ eV}\)
(B) \((KE)_b = 0.01 \text{ eV}\)
(C) \((KE)_c = 4 \text{ eV}\)
(D) \((KE)_d = 16 \text{ eV}\)
Choose the correct answer from the options given below:
- A (A), (B), (C), (D)
- B (B), (A), (C), (D)
- C (B), (A), (D), (C)
- D (C), (B), (D), (A)
Answer & Solution
Correct Answer
(B) (B), (A), (C), (D)
Step-by-step Solution
Detailed explanation
\( \lambda \propto \frac{1}{\sqrt{KE}} \) \( (KE)_b = 0.01 \text{ eV} \) \( (KE)_a = 1 \text{ eV} \) \( (KE)_c = 4 \text{ eV} \) \( (KE)_d = 16 \text{ eV} \) Decreasing \(\lambda\): (B), (A), (C), (D)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- Which of the following element has highest binding energy per nucleon ?CUET 2023 Medium
- Electrical energy is transmitted over long distances at high alternating voltages by the use of a transformer. Choose the correct statements from the following :
(A) Higher voltage implies less power loss.
(B) The alternating magnetic flux induces eddy currents in the iron core and causes heating.
(C) Step up transformer increases the current by reducing the voltage in the above transformer.
(D) Transmission lines can be made thinner to reduce power loss.
Choose the correct answer from the options given below :CUET 2023 Hard - A radioactive source is freshly prepared. It is found that it emits radiation of intensity which is 128 times the premissible safe level. The half life of this sample is 3 hours. Find the minimum time after which it would be possible to work safely with this radioactive source.CUET 2023 Hard
- A parallel plate capacitor whose capacitance C is 13.0 pF is charged by a battery to a potential difference V = 13.0 V between its plates. What is the potential energy of the capacitor ?CUET 2023 Hard
- The magnitude of the magnetic field due to a short bar magnet having a magnetic moment of 0.2 \( \text{Am}^2 \), at a distance of 50 cm from the centre of the magnet on its axial line will be:CUET 2025 Medium
- Two polaroid \( P_1 \) and \( P_3 \) are placed such that their pass-axis are mutually perpendicular. Another polaroid \( P_2 \) is rotated between \( P_1 \) and \( P_3 \). For what angle \( \theta \) between \( P_1 \) and \( P_2 \) the intensity of light emerging from \( P_3 \) will be maximum ?CUET 2023 Easy
More PYQs from CUET
- Lichens are an example of -CUET 2025 Hard
- A coil of 500 turns is threaded by a magnetic flux of \( 7 \times 10^{-5} \text{ Wb} \). If the flux changes to \( 3 \times 10^{-5} \text{ Wb} \) in 0.01 s, what average induced emf is developed in the coil? If resistance offered by the coil is \( 10 \, \Omega \), then the flow of average induced current will be :CUET 2023 Easy
- Identify the final product \((C)\) in the reaction given below:
\(CH _3 CH _2 I + NaCN \rightarrow A \rightarrow\) (Partial hydrolysis \(\left./ OH ^{-}\right) \rightarrow b + NaOH + Br _2 \rightarrow C ?\)CUET 2025 Easy - Pick the correct structure for carbolic acid among the following compounds:CUET 2025 Hard
- Complete hydrolysis of DNA does not yieldCUET 2023 Medium
- Match List I with List - II. -
List – l List – II (A) Aspergillus niger (l) Blood cholesterol lowering agent (B) Trichoderma polysporum (II) Citric Acid (C) Saccharomyces cerevisiae (III) Immunosuppressive agent (D) Monascus purpureus (IV) Ethanol
Choose the correct answer from the options given below:CUET 2023 Easy